Parasitic castration

Given these extant predictions and observations, our goal here was to take a step back from questions about evolution of virulence and parasitic castration.

Hemioniscus balani

Gomes da Silva, R. The presence of two or three lines on scales was more frequent among infested fish than among fish without parasites in the studied area. Another phenotypic change that is sometimes associated with parasitic castrators is earlier reproduction by infected hosts. Aquaculture, For instance, the host may be temporally too sick to reproduce. Igor, J. However, we tackle these notions by explicitly modeling the dynamic energy budget DEB of the host. Who are the hosts? In doing so, the model readily predicts gigantism; very high production of the parasite; prolonged life of the host; and earlier age at first reproduction. How do parasitic castrators affect host populations?

Kavaliers, This is a research topic ripe for plundering! Reproduction, Is reduced body growth of cod exposed to the gill parasites a cost of resistance? Vasagam, P.

What is parasitic castration? Loss of fecundity in a population of mudsnail Hydrobia ventrosa caused by larval trematodes does not measurably affect host population equilibrium level.

Directly transmitted parasite

Trilles Two recent studies with parasites of Daphnia Ebert et al. But if individual hosts are being castrated, we might expect host population densities to decline because there are fewer hosts reproducing. That would be a cool modeling paper! Parasites can manipulate the allocation of host resources by manipulating host hormones. How do parasitic castrators affect host populations? Biology Bulletin, Another phenotypic change that is sometimes associated with parasitic castrators is earlier reproduction by infected hosts. M Kurtis.

All infested C. So, we can imagine the pie being divided up the same way, but shrinking. Dufour, C. Immature ovaries and testes are still present in infested C.

parasites in crabs

Here are just a few more examples: I have previously blogged about Sacculina barnancles and their crab hosts.

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Parasitic castration